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All results from a given calculation for H2OH2O (water dimer)

using model chemistry: PBEPBE/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/aug-cc-pVDZ
 hartrees
Energy at 0K-152.727136
Energy at 298.15K-152.729999
HF Energy-152.727136
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.529827
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at PBEPBE/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3769 3746 67.99      
2 A' 3682 3659 6.94      
3 A' 3522 3500 393.36      
4 A' 1602 1592 25.51      
5 A' 1582 1572 80.76      
6 A' 383 381 36.06      
7 A' 196 195 181.67      
8 A' 165 164 95.82      
9 A" 3791 3768 68.93      
10 A" 655 651 72.84      
11 A" 165 164 0.34      
12 A" 131 130 161.46      

Unscaled Zero Point Vibrational Energy (zpe) 9820.7 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 9760.8 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at PBEPBE/aug-cc-pVDZ
ABC
6.84641 0.21793 0.21770

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.113 0.543 0.000
O2 0.006 1.519 0.000
O3 0.006 -1.417 0.000
H4 0.916 1.862 0.000
H5 -0.565 -1.610 0.766
H6 -0.565 -1.610 -0.766

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.98141.96301.54422.38432.3843
O20.98142.93570.97193.27203.2720
O31.96302.93573.40280.97520.9752
H41.54420.97193.40283.85223.8522
H52.38433.27200.97523.85221.5322
H62.38433.27200.97523.85221.5322

picture of water dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 104.474 H1 O3 H5 103.293
H1 O3 H6 103.293 O2 H1 O3 170.686
H5 O3 H6 103.541
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.144      
2 O -0.226      
3 O -0.262      
4 H 0.079      
5 H 0.133      
6 H 0.133      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.185 -2.452 0.000 2.459
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.134 6.102 0.000
y 6.102 -13.403 0.000
z 0.000 0.000 -12.486
Traceless
 xyz
x 0.810 6.102 0.000
y 6.102 -1.093 0.000
z 0.000 0.000 0.283
Polar
3z2-r20.565
x2-y21.268
xy6.102
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.882 0.175 0.000
y 0.175 3.532 0.000
z 0.000 0.000 2.939


<r2> (average value of r2) Å2
<r2> 53.037
(<r2>)1/2 7.283